摘要
对于采用透光性材料或直接曝露于室外的大跨度钢结构,在太阳辐射作用下结构温度远高于环境温度且极不均匀,可能成为结构的控制荷载,而现有规范和文献并未给出明确科学的温度作用取值依据。结合双向张弦梁实际工程,通过建立太阳辐射作用下钢结构温度场数值模拟方法,分析温度场分布规律以及结构的温度响应,给出考虑太阳辐射影响的结构温度作用的取值原则。
For large-span steel structure with transparent materials, or the one is outdoor, its temperature is usually not only higher than the corresponding ambient temperature, but also very non-uniform under solar radiation. Therefore, the high non -uniform temperature is the control load for the large-span steel structures. However, there are no definite and scientific bases for determining the thermal load in current codes and published papers. Combined with an actual project of a bi-direetional beam string structure, the numerical simulation method for the temperature field analysis of steel structures under solar radiation was established. The temperature distribution and the thermal load response were also analyzed.
出处
《工业建筑》
CSCD
北大核心
2013年第9期129-133,139,共6页
Industrial Construction
基金
国家自然科学基金项目(51208355)
中国博士后科学基金(2012M510751)
天津市建委科技项目(2012-12)
关键词
太阳辐射
非均匀温度场
双向张弦梁
结构温度响应
温度作用取值
solar radiation
non-uniform temperature field
hi-directional beam string
thermal response of structure
temperature action value
